Trolley for electric cars



(No Model.) G. L. CAMPBELL.

TROLLBY FOR ELECTRIC GARS.

N 576,394- Patented Feb-2, 1897.

WITNESSES: 2 I l/Vl/E/VTOH UNITED STATES I PATENT OFFICE.

GEORGE L. CAMPBELL, OF SHUNK, PENNSYLVANIA, ASSIGNOR OF ONE- I-IALF TO ANTHONY B. KILMER, OF SAME PLACE, AND BLAKE E. GAMBLE, OF FORKSVILLE, PENNSYLVANIA.

TROLLEY FOR ELECTRIC CARS.

SPECIFICATION forming part of Letters Patent N 0. 576,394, dated February 2, 1897.

Application filed March 18, 1896- To (1. whom it may concern:

Be it known that 1, GEORGE L. CAMPBELL, of Shunk, in the county of Sullivan and State of Pennsylvania, have invented a new and Improved Trolley, of which the following is a full, clear, and exact description.

The object of this invention is to provide a trolley which will be capable of more effectively retaining its position with relation to the wire, and also one in which the means for so retaining the trolley will be capable of automatically moving to a plane below the upper periphery of the trolley when the pole carrying the trolley moves downward.

The invention consists in certain features of construction and combinations of parts, which will be fully described hereinafter and finally embodied in the claims.

Reference is to be had to the accompanying drawings, forming a part of this specification, in which similar characters of reference indicate corresponding parts in both the views.

Figure 1 is a front elevation of a trolley embodying the essential features of my invention 5 and Fig. 2 is a side elevation of the same, parts being broken away.

In carrying out my invention the post 1 is revolubly mounted on asupport 2, rigid with the car, and on the post 1 is rockably mounted the pole 3 through the medium of a transverse spindle 4. The post 1 rigidly carries a longitudinally-extendiug arm 5, to which a retractile spring 6 is connected, said spring being also connected to an arm 7, moving with the pole 3. By these means the pole is given a tendency to the posit-ion shown in Fig. 2. The upper end of the pole is forked and carries a spindle 8, on which the trolley-wheel 9 is revolubly mounted, the wheel being between the arms of the fork.

Respectively pivoted on the extremities of the spindle 8 are the blocks 10, which are two in number, one at each side of the pole, and which have rearwardly-extending arms 11, to which the two retractile spiral springs 12 are respectively connected, said springs extending downward and having their lower ends connected to the trolley-pole. These springs Serial No. 583,691. (No modeL) I give the blocks 10 a tendency to swing rearward at their upper portions. 5

Connected to the lower portion of each block 10 is a cord or other flexible connection 13, said connection being split or divided at its upper portion, so that itmay connect with each block, and being passed over an idler- '5 pulley 14, carried by an arm 15, projecting rearwardly from the trolley-pole 3, to which pole it is secured by a clip 16, a brace 17 being provided for the arm, whereby it is made rigid with the trolley-pole. 6

The flexible connection 13 extends downwardly and forwardly across the pole 3 to and around a second idler-pulley 17, carried by an arm 18, rigid 011 the post 1, and from the pulley 17 the connect-ion 13 extends upwardly 6 and rearwardly to the pole 3, to which it is connected by a band 19. By means of this connection it will be seen that the blocks 10 are, when the pole is in the position shownin Fig. 2, held against the tension of the springs 7 12, and when the pole is moved downwardly the connection 13 is drawn rearwardly at its lower end, thereby moving the upper portion of the connection downwardly and throwing the blocks 10 forward against the tension of 7 the springs 12.

Each block 10 has an upwardly-extending portion forked to respectively receive the lower ends of arms 20, said arms being pivoted to the blocks and having a slight outward 8 divergence with relation to each other and also having at their front edges outwardlyextending flanges 21.

Fixed to or formed integral with the arms 20 and at the outer sides thereof are posts 22, said posts being slotted to respectively slidably receive the springs 23, which are respectively rigidly secured to the front portions of the blocks 10 and serve to keep the arms 20 in an upright position, as shown in the drawings, 9

It will be seen that the pivotal mounting of the arms 20 permits them to swing when the tendency of the springs 23 is overcome, and this movement is shown by dotted lines in Fig. 2, the springs 23 sliding freely in the slots in the posts 22. By means of these arms 20 the trolley is kept continually in engagement with the wire 24, and the accidental disengagement of these parts is made impossible. It will also be seen that the arms 20 may freely swing downward to permit passing any obstructiomsuch as insulators, cross-braces,and like devices.

It will be understood that the arms 20 act independently of the operation of the blocks 10 and that the latter parts only swing when the pole 3 is moved downward; but this swinging of the blocks 10 results in a corresponding movement of the arms 20, since said arms are carried by the blocks.

The trolley-pole is to be controlled, as usual, by any proper means.

Having thus fully described my invention, I claim as new and desire to secure by Letters Patent- 1. The combination of a post, a trolley-pole pivotally mounted thereon, a trolley-wheel carried by the pole, an arm pivotally mounted on the pole, a spring in connection with the arm and pole, a flexible connection actuating saidarm, the connection being attached to the pole, and an idler-pulley carried by the post and over which the connection passes, substantially as described.

2. The combination of a pivotally-mounted trolley-pole, a block pivotally mounted on the trolley-pole, an arm pivotally carried by the block, a spring carried by the block and sustaining the arm, a second spring connected to the block and to the pole, a flexible connection attached to the block, an idler-pulley rigid with the pole and over which said connectionpasses,said connection being attached to the pole, a stationary idler-pulley off the pole and a trolley-wheel carried by the pole, substantially as described.

3. The combination of a post, a trolley-pole pivotally mounted thereon, an arm rigidly carried by the post, a retractile spring 0011- nected to the arm and to the pole, a trolleywheel carried by the pole, an arm pivotally carried on the pole, and means for controlling said arm, said means comprising a flexible connection, and also comprising an idlerpulley carried by the post and over which said connection passes, substantially as described.

4. The combination of a pivotally-mounted trolley-pole, a trolley-wheel carried by the pole, a block pivotally mounted at each side of the trolley-pole, a spring connected to each block and to the pole, an arm pivotally mounted on each block, a spring sustaining each arm upright on the blocks, and means for moving the blocks against the tendency of their springs, substantially as described.

5. The combination of a mounted trolleypole, a trolley-wheel carried by the pole, an arm pivotally mounted on the pole and adjacent to the wheel, a stationary idler-pulley mounted off the pole, a second idler-pulley carried by the pole and a flexible connection connected to the pole and to the'arm, the flexible connection being passed over the two idler-pulleys, substantially as described.

GEORGE L. CAMPBELL- Witnesses:

JOHN W. ROGERS, A. B. KILMER. 

